How to fight humidity in a room

By mvuilleu, in Measures and Misc, august 23,2015.

Humidity issues are frequent in basement rooms. An air that is too humid promotes the growth of mold on the wallsand spreads musty odors. If you are faced with such issues, you could run buy a dehumidifier, but it's not necessarily the best method. Today, we present a solution based on Yoctopuce sensors which allows you to lower the humidity level of a room in a simple and pragmatic way.

PIR: a USB motion sensor

By martinm, in Measures and DIY, august 14,2015.

From time to time, we are asked whether Yoctopuce would be interested in building a USB motion sensor based on a PIR sensor. Let's kill the suspense right away: the answer is no, not at the present time. However, we can show you how to build one for a little bit more than the price of a Yocto-Serial.

Remote monitoring with the Valarm cloud

By mvuilleu, in Measures, Reviews and Internet of Things, july 31,2015.

There are more and more services enabling you to store your measures in the cloud. We already presented free (but limited) solutions such as EmonCMS and ThinkSpeak, and more recently the commercial solution Microsoft Azure. Today, we present the professional solution developed by our US reseller, Valarm.net, which is today the only one to exploit the advanced features of Yoctopuce modules and also offers features linked to geolocation that you don't find in other services.

A Solar, Waterproof and Wifi thermometer

By martinm, in Measures and DIY, july 17,2015.

Recently we had to build a device able to measure temperature on a roof. No electricity was available up there, the only technological stuff we could use was a wifi network. That project is not really original since the issues involved have been covered in the mail box and the weather station posts. However we though you would be interested in the box construction....

Tracking time in the Internet of Things

By mvuilleu, in Measures and Internet of Things, june 21,2015.

In an computer system, measure and event timestamps are considered an evidence and, nowadays, no one expects to encounter difficulties in this domain. However, knowing the exact time at any time is far from obvious, in particular if you work with autonomous sensors with limited resources.